19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Benzoic acid is dissolved in benzene, van’t Hoff factor will be
A solution containing 10g per dm3 of urea (molecular mass = 60g mol–1) is isotonic with a 5% solution of a non-volatile solute. The molecular mass of this non-volatile solute is
A 6% solution of urea is isotonic with
An aqueous solution is 1.0 molal in KI. Which change will cause the vapour pressure of the solution to increase? (AIPMT 2010)
The temperature at which 10% aqueous solution (w/V) of glucose will exhibit the osmotic pressure of 16.4 atm, is (R = 0.082 dm3 atm K–1 mol–1)
The concentration (in mol/L) of the solution having osmotic pressure 0.0821 atm at 300 K will be
What happens when an egg is kept in saturated solution of NaCl after removing its hard shell in dil. HCl?
A plant cell shrinks when it is kept in
A semipermeable membrane
Osmotic pressure is proportional to
Camphor is often used in molecular mass determination because
What happens to freezing point of benzene when naphthalene is added?
During freezing of a solution the following are in equilibrium
Dissolution of 1.5g of a non-volatile solute (mol. wt. = 60) in 250g of a solvent reduces its freezing point by 0.01ºC. Find the molal depression constant of the solvent.
The relative lowering of the vapour pressure is equal to the ratio between the numbers of
Raoult's law states that for a dilute solution,
“Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute.” This statement is
2g of sugar is added to one litre of water to give sugar solution. What is the effect of addition of sugar on the boiling point and freezing point of water?
Colligative properties of the solution depend on
Which one of the following is not a colligative property?
20g of non-volatile solute is added to 500g of solvent. Freezing point of solvent = 5.48ºC and solution = 4.47ºC, Kf = 1.93ºC/m. Molecular mass of the solute is
A non-ideal solution was prepared by mixing 30 mL chloroform and 50 mL acetone. The volume of mixture will be
A solution with negative deviation among the following is
A solution of acetone in ethanol
Which of the following liquid pairs shows a positive deviation from Raoult’s law?